摘要 |
Biscyclosiloxane imides such as 1,3-bis[5'-(heptamethylcyclotetrasiloxyl)-bicyclo[2.2.1]heptane-2',3'- dicarboxylicimido]phenylene are made by intercondensing the corresponding cyclicsiloxane norbornane anhydride with aromatic diamine. The biscylosiloxane imides can be converted to coating compositions or elastomers.
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